The iMac with Retina 5K Display arrived yesterday so we rushed to get you some speed test results. In this first round, we compare it to the fastest 'late 2013' iMac Quad-Core i7 and the 'late 2013' Mac Pro Quad-Core Xeon.

In four out of six tests, the '5K' iMac was faster than the 'late 2013' Quad-Core Mac Pro. However, in the two tests where the Mac Pro was faster (LuxMark, FCPX Gaussian Blur), both D300 GPUs were used for rendering. The iMac only has one discrete GPU. If LuxMark was forced to use only one D300, the iMac's M295X would be faster.

Though the 5K iMac is capable of 5120x2880 resolution, we ran Tomb Raider and Diablo III at the 'Best for display' 2560x1440 scaled setting. Not only did that make it a 'fair fight' but Tomb Raider is unable to run at the highest resolution. FYI, Diablo III was able to run at 5120x2880 which cut the average framerate in half (31 FPS).

WHERE TO BUY iMACS and OTHER APPLE products:USA readers can help us earn a commission by using this Apple Store USA link or by clicking on any Apple display ad. Live outside the USA? No problem. We are affiliated with these Apple Stores: